A lamp is on a dimmer switch. As you turn the switch from the lowest setting to the highest setting, which statement would best describe what happens?
A)
B)
The light bulb consumes less electricity, burns dimmer and uses more
power.
The light bulb consumes more electricity, burns brighter and uses more
power.
The light bulb consumes less electricity, bums brighter and uses more
power
The light bulb consumes more electricity, burns brighter and uses less
power.
c)
D)

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

The metric unit of electrical power is the watt volt ampere ohm

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?